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October 6, 2025

The 47-Day Certificate Ultimatum: How Browsers Broke the CA Cartel

For twenty years, Certificate Authorities ran the perfect protection racket.

Nice website you got there. Shame if it was “Not Secure.” That’ll be $300 a year.

The CAs had a beautiful monopoly. Browsers needed them to keep users safe. Websites needed them to look legitimate. Everyone paid up, nobody asked too many questions. Then the cryptography of most certificates (SHA-1) got shattered, and the browsers realized they’d been played.

This is the story of how certificate lifetimes went from 3 years to 47 days, why the CAs fought every second of it, and what it means for your certificates.

Read the full story of 47 day certificates »

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